DATA SEGMENT AT 2000H
        NUM1 DW 6B9FH
        NUM2 DW 425CH
        SUM  DW 0000H
DATA ENDS

CODE SEGMENT
        ASSUME CS:CODE, DS:DATA
START:  MOV AX, DATA
        MOV DS, AX
        MOV AX, NUM1
        ADD AX, NUM2
        MOV SUM, AX
        MOV AH, 4CH
        INT 21H
CODE ENDS
END START
